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Author Topic: 9 1/4 rear: Running great!  (Read 2449 times)

Stan Paralikis

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9 1/4 rear: Running great!
« on: November 22, 2009, 01:15:32 PM »

 
CLARIFICATION:
Changing the ring and pinion in a 9 1/4 rear...
Am I able to do it or should I bring it to a shop?
 
I know that this tool will be needed:
 

 
Commando12010-03-23 16:22:57

Steve

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9 1/4 rear: Running great!
« Reply #1 on: November 22, 2009, 01:57:12 PM »

I don't think it will fit in the housing
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Leaburn Patey

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9 1/4 rear: Running great!
« Reply #2 on: November 22, 2009, 02:04:36 PM »

.
Stan,follow your gut feeling..
If you feel uncomfortable --let the pros handle it.
You do have the advantage that the Formals and Ram trucks shared the same rear axle and parts are readily available and a choice of final drives,and Sure Grip options.
Trucks have used  the 9-1/4 right up until  a couple years ago
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Stitcherbob

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9 1/4 rear: Running great!
« Reply #3 on: November 22, 2009, 02:33:55 PM »

You might need a special tool (but it's relatively easy to make) to spread the case open a tiny bit to get the guts in and out.....it 's basically a bar with 2 pegs welded to it and a heavy duty turnbuckle welded in there to open the case. Then you have to go through all of the adjustments steps, which can get tedious.

here's a how to:
http://www.off-road.com/trucks4x4/article/articleDetail.jsp?id=194353


http://www.hemmings.com/mus/stories/2005/12/01/hmn_feature25.html?t=printable
http://www.moparaction.com/Tech/questions/BEEFY.html


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Steve

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9 1/4 rear: Running great!
« Reply #4 on: November 22, 2009, 04:28:46 PM »

The big question is why?  The 8 3/4 can handle a hello lot more than you have.
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Stan Paralikis

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9 1/4 rear: Running great!
« Reply #5 on: November 23, 2009, 02:46:12 AM »

Quote from: POLARACO
The big question is why?  The 8 3/4 can handle a hello lot more than you have.
Wake up. Steve!

The rear in  The NYB  is a 9 1/4  and the ring and pinion I have that I want to swap in is for a 9 1/4.

Steve

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« Reply #6 on: November 23, 2009, 05:04:35 AM »

Duhhhhhhhhh   Too new for me. . .  Yer right . . . Shake Shake Shake
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Snotty

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9 1/4 rear: Running great!
« Reply #7 on: November 23, 2009, 08:47:34 AM »

Stan, would it be easier to find another rear with the ratio you want and just swap them?
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Stan Paralikis

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9 1/4 rear: Running great!
« Reply #8 on: November 23, 2009, 09:44:36 AM »

Quote from: Snotty
Stan, would it be easier to find another rear with the ratio you want and just swap them?
Changing an entire rear is EASIER than changing just a ring & pinion?
Besides, I have the ring and pinion already....

Steve

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« Reply #9 on: November 23, 2009, 11:43:55 AM »

The smart answer is find an old timer at a stealership and have them do it.  He'll probably have all the tools and has done one or two before.
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Snotty

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9 1/4 rear: Running great!
« Reply #10 on: November 24, 2009, 09:21:35 AM »

Quote from: Commando1
Changing an entire rear is EASIER than changing just a ring & pinion?
 
I've done it twice and would say... Yes!  Unless you're dealing with a rear where you can swap the entire third member like a Mopar 8.75 or Ford 9" I find the two hours of work swapping the entire rear to be a better/easier route than taking the time, money, and expertise to swap the ring and pinion.
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Stan Paralikis

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9 1/4 rear: Running great!
« Reply #11 on: November 24, 2009, 10:42:23 AM »

Hmmmmmmmmmmmmmmm... Interesting.
BUT, I don't have an extra 9 1/4 3.55 laying around....

Steve

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« Reply #12 on: November 24, 2009, 11:31:06 AM »

If you know what you are doing it's not that bad.  The hardest part is setting up the tolerances.
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Stan Paralikis

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9 1/4 rear: Running great!
« Reply #13 on: November 24, 2009, 01:42:24 PM »

If I knew what I was doing, I wouldn't have asked in the first place.
 
Maybe I should rephrase the question.  Who has done it?

Stitcherbob

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9 1/4 rear: Running great!
« Reply #14 on: November 24, 2009, 05:07:45 PM »


stop yer bellyache'in and dive in.....what could go wrong?


oh yeah... 


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